Meerschaums are about all I smoke now.
Forget the silliness about holding it with a cloth or a velvet glove or any of that other nonsense. The only people who worry about such things are the truly nutty collectors trying to get a perfectly colored pipe. The skin oils do alter the coloring but I think it just makes them more unique and interesting. You should always make sure your hands are clean when handling them though.
The best things about them are that:
a) they need no breaking in at all

they are carved in so many wonderful designs and each one is truly one of a kind as they are all hand carved
c) they are the coolest, best smoking pipes in the world. Tobacco smoked in a briar pipe tastes nothing like the same tobacco smoked in a meer.
I have a nice little collection of meers and intend to add more when I can afford to do so.
There are two places in the world where the material comes from, a place in Turkey, and a place in Africa. You can tell the ones from Africa as they are typically glazed. This is because the material is of a lower quality. Always buy the nice, white Turkish ones. Those Turkish carvers are masters.